2668691684 has 24 divisors (see below), whose sum is σ = 4792901568. Its totient is φ = 1299716640.

The previous prime is 2668691651. The next prime is 2668691687. The reversal of 2668691684 is 4861968662.

It is not an unprimeable number, because it can be changed into a prime (2668691687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27962 + ... + 78225.

It is an arithmetic number, because the mean of its divisors is an integer number (199704232).

Almost surely, 2^2668691684 is an apocalyptic number.

It is an amenable number.

2668691684 is a deficient number, since it is larger than the sum of its proper divisors (2124209884).

2668691684 is a wasteful number, since it uses less digits than its factorization.

2668691684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106355 (or 106353 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 56.

The square root of 2668691684 is about 51659.3813745384. The cubic root of 2668691684 is about 1387.0734770365.

The spelling of 2668691684 in words is "two billion, six hundred sixty-eight million, six hundred ninety-one thousand, six hundred eighty-four".